observation

noun 0.718

observation car

noun 0.710

observation deck

noun 0.693

telescope

noun 0.686

observer

noun 0.683

observing

noun 0.670

astronomer

noun 0.652

planetarium

noun 0.640

observable

noun 0.626

optical astronomy

noun 0.614

lookout

noun 0.603

observability

noun 0.591

microscope

noun 0.585

conservatory

noun 0.584

astrolabe

noun 0.582

laboratory

noun 0.577

riflescope

noun 0.572

museum

noun 0.565

aquarium

noun 0.565

orbital

noun 0.564

monitor

noun 0.561

oscilloscope

noun 0.561

ology

noun 0.560

oceanview

noun 0.556

theodolite

noun 0.554

arboretum

noun 0.554

space station

noun 0.552

radio telescope

noun 0.551

lighthouse

noun 0.551

celestial object

noun 0.550

ometer

noun 0.550

orbit

noun 0.549

belvedere

noun 0.547

observance

noun 0.545

solar telescope

noun 0.544

orbiter

noun 0.542

surveillance

noun 0.542

optics

noun 0.540

space satellite

noun 0.539

radio astronomer

noun 0.538

onlooker

noun 0.538

oceanographer

noun 0.537

panopticon

noun 0.537

orchestra

noun 0.537

oceanography

noun 0.536

stargazer

noun 0.535

watcher

noun 0.535

astro

noun 0.533

ologist

noun 0.533

overlook

noun 0.533

astrology

noun 0.532

barometer

noun 0.532

watchtower

noun 0.532

reflecting telescope

noun 0.531

overlooker

noun 0.530

auditorium

noun 0.530

nonobservation

noun 0.529

orrery

noun 0.528

ophthalmoscope

noun 0.527

listening station

noun 0.526

vantage point

noun 0.525

interferometer

noun 0.524

preobservation

noun 0.524

monitoring

noun 0.524

oriel

noun 0.524

optical microscope

noun 0.523

spectroscope

noun 0.522

oracle

noun 0.520

space science

noun 0.519

camera obscura

noun 0.519

science center

noun 0.518

ontology

noun 0.517

study

noun 0.516

periscope

noun 0.515

astrophysics

noun 0.514

sight

noun 0.513

spyglass

noun 0.513

outer space

noun 0.513

astrologist

noun 0.512

optometry

noun 0.512

astrophysicist

noun 0.512

radio astronomy

noun 0.512

visor

noun 0.512

ocular

noun 0.511

ornithology

noun 0.511

refracting telescope

noun 0.511

space research

noun 0.510

outpost

noun 0.510

exploratory

noun 0.509

thermometer

noun 0.508

rooftop

noun 0.508

orb

noun 0.507

optical

noun 0.507

surveyor

noun 0.505

gazebo

noun 0.505

electroscope

noun 0.505

university

noun 0.504

orchard

noun 0.504

astrometry

noun 0.504

oculus

noun 0.504